// JavaScript Document
window.onload = function() {
	var cover_all = document.getElementsByClassName('cover_all')[0];
	var cover1 = document.getElementsByClassName('cover1')[0];
	var cover2 = document.getElementsByClassName('cover2')[0];
	var cover3 = document.getElementsByClassName('cover3')[0];
    
  
    var xy = 5;

    function mns(){
      xy --;
      if(xy==0){
        cover_all.style.display = "none";
      }
      cover3.innerHTML = xy;
    }
    timer2 = setInterval(mns,1000)


}